<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        #wp {
            width: 500px;
            margin: 100px;
        }
        
        select {
            margin-left: 20px;
        }
    </style>
</head>

<body>
    <div id="wp">
        <select name="" id="province">
            <option value="0">请选择</option>
        </select>省
        <select name="" id="city">
            <option value="0">请选择</option>
        </select>市
        <select name="" id="area">
            <option value="0">请选择</option>
        </select>区
    </div>




    <script src="js/city.js"></script>
    <script src="js/index.js"></script>
</body>

</html>